Difference between revisions of "User:Scmohr/ProtCode Repressors & Activators"
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[[Image:TrpR + DNA (350 px).png|frame|right|The crystal structure of the tryptophan repressor dimer binding to its palindromic DNA operator sequence fragment.]] | [[Image:TrpR + DNA (350 px).png|frame|right|The crystal structure of the tryptophan repressor dimer binding to its palindromic DNA operator sequence fragment.]] | ||
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=='''Repressors & Activators'''== | =='''Repressors & Activators'''== | ||
Repressors and activators are transcription factors -- proteins that bind to specific DNA sequences and regulate the transcription of one or more nearby genes. They also bind "ligands," small molecules that play a role in repressing or activating transcription by altering the conformations (3D-shape) of the transcription factors. | Repressors and activators are transcription factors -- proteins that bind to specific DNA sequences and regulate the transcription of one or more nearby genes. They also bind "ligands," small molecules that play a role in repressing or activating transcription by altering the conformations (3D-shape) of the transcription factors. | ||
Revision as of 16:17, 11 June 2008
.png)
The crystal structure of the tryptophan repressor dimer binding to its palindromic DNA operator sequence fragment.
(22 parts)
Repressors & Activators
Repressors and activators are transcription factors -- proteins that bind to specific DNA sequences and regulate the transcription of one or more nearby genes. They also bind "ligands," small molecules that play a role in repressing or activating transcription by altering the conformations (3D-shape) of the transcription factors.